Blockchain

Blockchain product and payment infrastructure

Paul Titov & Co develops blockchain product infrastructure where on-chain payments or events must drive a dependable application workflow. We connect wallets, network monitoring, product states, internal ledgers, and reconciliation; we do not provide exchange, custody, investment, or regulated financial services.

Blockchain becomes a product capability when on-chain events have to drive a dependable application workflow. A wallet connection or transaction hash is only the beginning. The system still needs quotes and expiry, payment instructions, signing boundaries, confirmation policies, failed-transaction handling, order states, reconciliation, monitoring, and support tools.

We develop Ethereum and TRON integrations for products that need on-chain payment rails, wallet connectivity, token transfers, transaction monitoring, and blockchain data. The work sits inside a conventional product architecture with accounts, permissions, APIs, databases, queues, webhooks, analytics, and administration.

Ethereum and TRON integrations

Ethereum work can include EVM-compatible networks, JSON-RPC services, WalletConnect, MetaMask, Solidity payment receivers, ERC-20 tokens, event indexing, gas estimation, confirmation handling, and contract interaction. TRON work can include TronWeb, TronGrid, Node HTTP APIs, TRC-20 monitoring, and USDT payment infrastructure where it is technically and legally appropriate.

Network behaviour is asynchronous and external to the product’s control. We design for duplicate events, delayed confirmations, chain reorganisations, provider outages, rate limits, fee changes, and transactions that remain pending. Idempotent services and explicit state machines keep repeated callbacks or rescans from creating repeated commercial actions.

Watchers, reconciliation, and product operations

Watchers collect transactions and contract events, queues process them, and reconciliation compares the chain with the internal product ledger. Operational interfaces show pending, confirmed, failed, unmatched, and manually reviewed events. Alerts focus on conditions that require action: stalled blocks, provider disagreement, growing queue depth, missing callbacks, or balances that no longer reconcile.

Our blockchain infrastructure service covers the engineering behind these systems. Fintech product development and software engineering provide the transaction, identity, reporting, and application layers around the chain.

Paul Titov & Co provides software and infrastructure development. We are not an exchange, custodian, investment provider, payment institution, or other licensed financial institution.

Making blockchain understandable to operations

Most users and support teams should not need to reason about nodes, finality, nonces, or reorganisations. We translate those network mechanics into product states with clear next actions, while preserving the transaction evidence required for investigation and accounting. Conventional backend records and the chain are reconciled deliberately rather than assumed to agree.

We design for delayed confirmations, repeated callbacks, changing fees, provider outages, failed broadcasts, replaced transactions, and manual exceptions. Monitoring groups technical signals into incidents a team can act on. This is especially important for payment products, where an apparently small edge case becomes a financial discrepancy if it is allowed to repeat.

Paul Titov & Co is not an exchange, a custodian, or a licensed financial institution.